what does that law say? it basically says that by the year 2014, every child in the united states should be proficient in english and in mathematics. >> poor scores could trigger drastic consequences like bringing in a private company to take over. so schools took time from their normal teaching to prepare their students for the tests. >> i have the results in my hands. now, am i smiling? >> no. >> no, i am not happy right now. i am not happy because many of you did not do so well. but that's okay for now, because that is part of the reason why i am here, so that we can make some adjustments and so that you can score better. >> the dc cas was also designed to diagnose students to identify those needing additional help. but rhee was taking it one step further. >> how did dc cas become this be all and end all instrument for principals? >> that's a very good question. i don't know. it did not become a serious issue until michelle rhee looked every single principal in the eye and said, "what can you guarantee me